1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Hauppauge HD PVR USB driver - video 4 linux 2 interface 4 * 5 * Copyright (C) 2008 Janne Grunau (j@jannau.net) 6 */ 7 8#include <linux/kernel.h> 9#include <linux/errno.h> 10#include <linux/init.h> 11#include <linux/slab.h> 12#include <linux/module.h> 13#include <linux/uaccess.h> 14#include <linux/usb.h> 15#include <linux/mutex.h> 16#include <linux/workqueue.h> 17 18#include <linux/videodev2.h> 19#include <linux/v4l2-dv-timings.h> 20#include <media/v4l2-dev.h> 21#include <media/v4l2-common.h> 22#include <media/v4l2-dv-timings.h> 23#include <media/v4l2-ioctl.h> 24#include <media/v4l2-event.h> 25#include "hdpvr.h" 26 27#define BULK_URB_TIMEOUT 90 /* 0.09 seconds */ 28 29#define print_buffer_status() { \ 30 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, \ 31 "%s:%d buffer stat: %d free, %d proc\n", \ 32 __func__, __LINE__, \ 33 list_size(&dev->free_buff_list), \ 34 list_size(&dev->rec_buff_list)); } 35 36static const struct v4l2_dv_timings hdpvr_dv_timings[] = { 37 V4L2_DV_BT_CEA_720X480I59_94, 38 V4L2_DV_BT_CEA_720X576I50, 39 V4L2_DV_BT_CEA_720X480P59_94, 40 V4L2_DV_BT_CEA_720X576P50, 41 V4L2_DV_BT_CEA_1280X720P50, 42 V4L2_DV_BT_CEA_1280X720P60, 43 V4L2_DV_BT_CEA_1920X1080I50, 44 V4L2_DV_BT_CEA_1920X1080I60, 45}; 46 47/* Use 480i59 as the default timings */ 48#define HDPVR_DEF_DV_TIMINGS_IDX (0) 49 50struct hdpvr_fh { 51 struct v4l2_fh fh; 52 bool legacy_mode; 53}; 54 55static uint list_size(struct list_head *list) 56{ 57 struct list_head *tmp; 58 uint count = 0; 59 60 list_for_each(tmp, list) { 61 count++; 62 } 63 64 return count; 65} 66 67/*=========================================================================*/ 68/* urb callback */ 69static void hdpvr_read_bulk_callback(struct urb *urb) 70{ 71 struct hdpvr_buffer *buf = (struct hdpvr_buffer *)urb->context; 72 struct hdpvr_device *dev = buf->dev; 73 74 /* marking buffer as received and wake waiting */ 75 buf->status = BUFSTAT_READY; 76 wake_up_interruptible(&dev->wait_data); 77} 78 79/*=========================================================================*/ 80/* buffer bits */ 81 82/* function expects dev->io_mutex to be hold by caller */ 83int hdpvr_cancel_queue(struct hdpvr_device *dev) 84{ 85 struct hdpvr_buffer *buf; 86 87 list_for_each_entry(buf, &dev->rec_buff_list, buff_list) { 88 usb_kill_urb(buf->urb); 89 buf->status = BUFSTAT_AVAILABLE; 90 } 91 92 list_splice_init(&dev->rec_buff_list, dev->free_buff_list.prev); 93 94 return 0; 95} 96 97static int hdpvr_free_queue(struct list_head *q) 98{ 99 struct list_head *tmp; 100 struct list_head *p; 101 struct hdpvr_buffer *buf; 102 struct urb *urb; 103 104 for (p = q->next; p != q;) { 105 buf = list_entry(p, struct hdpvr_buffer, buff_list); 106 107 urb = buf->urb; 108 usb_free_coherent(urb->dev, urb->transfer_buffer_length, 109 urb->transfer_buffer, urb->transfer_dma); 110 usb_free_urb(urb); 111 tmp = p->next; 112 list_del(p); 113 kfree(buf); 114 p = tmp; 115 } 116 117 return 0; 118} 119 120/* function expects dev->io_mutex to be hold by caller */ 121int hdpvr_free_buffers(struct hdpvr_device *dev) 122{ 123 hdpvr_cancel_queue(dev); 124 125 hdpvr_free_queue(&dev->free_buff_list); 126 hdpvr_free_queue(&dev->rec_buff_list); 127 128 return 0; 129} 130 131/* function expects dev->io_mutex to be hold by caller */ 132int hdpvr_alloc_buffers(struct hdpvr_device *dev, uint count) 133{ 134 uint i; 135 int retval = -ENOMEM; 136 u8 *mem; 137 struct hdpvr_buffer *buf; 138 struct urb *urb; 139 140 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 141 "allocating %u buffers\n", count); 142 143 for (i = 0; i < count; i++) { 144 145 buf = kzalloc(sizeof(struct hdpvr_buffer), GFP_KERNEL); 146 if (!buf) { 147 v4l2_err(&dev->v4l2_dev, "cannot allocate buffer\n"); 148 goto exit; 149 } 150 buf->dev = dev; 151 152 urb = usb_alloc_urb(0, GFP_KERNEL); 153 if (!urb) 154 goto exit_urb; 155 buf->urb = urb; 156 157 mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL, 158 &urb->transfer_dma); 159 if (!mem) { 160 v4l2_err(&dev->v4l2_dev, 161 "cannot allocate usb transfer buffer\n"); 162 goto exit_urb_buffer; 163 } 164 165 usb_fill_bulk_urb(buf->urb, dev->udev, 166 usb_rcvbulkpipe(dev->udev, 167 dev->bulk_in_endpointAddr), 168 mem, dev->bulk_in_size, 169 hdpvr_read_bulk_callback, buf); 170 171 buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 172 buf->status = BUFSTAT_AVAILABLE; 173 list_add_tail(&buf->buff_list, &dev->free_buff_list); 174 } 175 return 0; 176exit_urb_buffer: 177 usb_free_urb(urb); 178exit_urb: 179 kfree(buf); 180exit: 181 hdpvr_free_buffers(dev); 182 return retval; 183} 184 185static int hdpvr_submit_buffers(struct hdpvr_device *dev) 186{ 187 struct hdpvr_buffer *buf; 188 struct urb *urb; 189 int ret = 0, err_count = 0; 190 191 mutex_lock(&dev->io_mutex); 192 193 while (dev->status == STATUS_STREAMING && 194 !list_empty(&dev->free_buff_list)) { 195 196 buf = list_entry(dev->free_buff_list.next, struct hdpvr_buffer, 197 buff_list); 198 if (buf->status != BUFSTAT_AVAILABLE) { 199 v4l2_err(&dev->v4l2_dev, 200 "buffer not marked as available\n"); 201 ret = -EFAULT; 202 goto err; 203 } 204 205 urb = buf->urb; 206 urb->status = 0; 207 urb->actual_length = 0; 208 ret = usb_submit_urb(urb, GFP_KERNEL); 209 if (ret) { 210 v4l2_err(&dev->v4l2_dev, 211 "usb_submit_urb in %s returned %d\n", 212 __func__, ret); 213 if (++err_count > 2) 214 break; 215 continue; 216 } 217 buf->status = BUFSTAT_INPROGRESS; 218 list_move_tail(&buf->buff_list, &dev->rec_buff_list); 219 } 220err: 221 print_buffer_status(); 222 mutex_unlock(&dev->io_mutex); 223 return ret; 224} 225 226static struct hdpvr_buffer *hdpvr_get_next_buffer(struct hdpvr_device *dev) 227{ 228 struct hdpvr_buffer *buf; 229 230 mutex_lock(&dev->io_mutex); 231 232 if (list_empty(&dev->rec_buff_list)) { 233 mutex_unlock(&dev->io_mutex); 234 return NULL; 235 } 236 237 buf = list_entry(dev->rec_buff_list.next, struct hdpvr_buffer, 238 buff_list); 239 mutex_unlock(&dev->io_mutex); 240 241 return buf; 242} 243 244static void hdpvr_transmit_buffers(struct work_struct *work) 245{ 246 struct hdpvr_device *dev = container_of(work, struct hdpvr_device, 247 worker); 248 249 while (dev->status == STATUS_STREAMING) { 250 251 if (hdpvr_submit_buffers(dev)) { 252 v4l2_err(&dev->v4l2_dev, "couldn't submit buffers\n"); 253 goto error; 254 } 255 if (wait_event_interruptible(dev->wait_buffer, 256 !list_empty(&dev->free_buff_list) || 257 dev->status != STATUS_STREAMING)) 258 goto error; 259 } 260 261 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 262 "transmit worker exited\n"); 263 return; 264error: 265 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 266 "transmit buffers errored\n"); 267 dev->status = STATUS_ERROR; 268} 269 270/* function expects dev->io_mutex to be hold by caller */ 271static int hdpvr_start_streaming(struct hdpvr_device *dev) 272{ 273 int ret; 274 struct hdpvr_video_info vidinf; 275 276 if (dev->status == STATUS_STREAMING) 277 return 0; 278 if (dev->status != STATUS_IDLE) 279 return -EAGAIN; 280 281 ret = get_video_info(dev, &vidinf); 282 if (ret < 0) 283 return ret; 284 285 if (!vidinf.valid) { 286 msleep(250); 287 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 288 "no video signal at input %d\n", dev->options.video_input); 289 return -EAGAIN; 290 } 291 292 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 293 "video signal: %dx%d@%dhz\n", vidinf.width, 294 vidinf.height, vidinf.fps); 295 296 /* start streaming 2 request */ 297 ret = usb_control_msg(dev->udev, 298 usb_sndctrlpipe(dev->udev, 0), 299 0xb8, 0x38, 0x1, 0, NULL, 0, 8000); 300 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 301 "encoder start control request returned %d\n", ret); 302 if (ret < 0) 303 return ret; 304 305 ret = hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00); 306 if (ret) 307 return ret; 308 309 dev->status = STATUS_STREAMING; 310 311 schedule_work(&dev->worker); 312 313 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 314 "streaming started\n"); 315 316 return 0; 317} 318 319 320/* function expects dev->io_mutex to be hold by caller */ 321static int hdpvr_stop_streaming(struct hdpvr_device *dev) 322{ 323 int actual_length; 324 uint c = 0; 325 u8 *buf; 326 327 if (dev->status == STATUS_IDLE) 328 return 0; 329 else if (dev->status != STATUS_STREAMING) 330 return -EAGAIN; 331 332 buf = kmalloc(dev->bulk_in_size, GFP_KERNEL); 333 if (!buf) 334 v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer for emptying the internal device buffer. Next capture start will be slow\n"); 335 336 dev->status = STATUS_SHUTTING_DOWN; 337 hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00); 338 mutex_unlock(&dev->io_mutex); 339 340 wake_up_interruptible(&dev->wait_buffer); 341 msleep(50); 342 343 flush_work(&dev->worker); 344 345 mutex_lock(&dev->io_mutex); 346 /* kill the still outstanding urbs */ 347 hdpvr_cancel_queue(dev); 348 349 /* emptying the device buffer beforeshutting it down */ 350 while (buf && ++c < 500 && 351 !usb_bulk_msg(dev->udev, 352 usb_rcvbulkpipe(dev->udev, 353 dev->bulk_in_endpointAddr), 354 buf, dev->bulk_in_size, &actual_length, 355 BULK_URB_TIMEOUT)) { 356 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 357 "%2d: got %d bytes\n", c, actual_length); 358 } 359 kfree(buf); 360 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 361 "used %d urbs to empty device buffers\n", c-1); 362 msleep(10); 363 364 dev->status = STATUS_IDLE; 365 366 return 0; 367} 368 369 370/*=======================================================================*/ 371/* 372 * video 4 linux 2 file operations 373 */ 374 375static int hdpvr_open(struct file *file) 376{ 377 struct hdpvr_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL); 378 379 if (fh == NULL) 380 return -ENOMEM; 381 fh->legacy_mode = true; 382 v4l2_fh_init(&fh->fh, video_devdata(file)); 383 v4l2_fh_add(&fh->fh); 384 file->private_data = fh; 385 return 0; 386} 387 388static int hdpvr_release(struct file *file) 389{ 390 struct hdpvr_device *dev = video_drvdata(file); 391 392 mutex_lock(&dev->io_mutex); 393 if (file->private_data == dev->owner) { 394 hdpvr_stop_streaming(dev); 395 dev->owner = NULL; 396 } 397 mutex_unlock(&dev->io_mutex); 398 399 return v4l2_fh_release(file); 400} 401 402/* 403 * hdpvr_v4l2_read() 404 * will allocate buffers when called for the first time 405 */ 406static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count, 407 loff_t *pos) 408{ 409 struct hdpvr_device *dev = video_drvdata(file); 410 struct hdpvr_buffer *buf = NULL; 411 struct urb *urb; 412 int ret = 0; 413 int rem, cnt; 414 415 if (*pos) 416 return -ESPIPE; 417 418 mutex_lock(&dev->io_mutex); 419 if (dev->status == STATUS_IDLE) { 420 if (hdpvr_start_streaming(dev)) { 421 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 422 "start_streaming failed\n"); 423 ret = -EIO; 424 msleep(200); 425 dev->status = STATUS_IDLE; 426 mutex_unlock(&dev->io_mutex); 427 goto err; 428 } 429 dev->owner = file->private_data; 430 print_buffer_status(); 431 } 432 mutex_unlock(&dev->io_mutex); 433 434 /* wait for the first buffer */ 435 if (!(file->f_flags & O_NONBLOCK)) { 436 if (wait_event_interruptible(dev->wait_data, 437 !list_empty_careful(&dev->rec_buff_list))) 438 return -ERESTARTSYS; 439 } 440 441 buf = hdpvr_get_next_buffer(dev); 442 443 while (count > 0 && buf) { 444 445 if (buf->status != BUFSTAT_READY && 446 dev->status != STATUS_DISCONNECTED) { 447 int err; 448 /* return nonblocking */ 449 if (file->f_flags & O_NONBLOCK) { 450 if (!ret) 451 ret = -EAGAIN; 452 goto err; 453 } 454 455 err = wait_event_interruptible_timeout(dev->wait_data, 456 buf->status == BUFSTAT_READY, 457 msecs_to_jiffies(1000)); 458 if (err < 0) { 459 ret = err; 460 goto err; 461 } 462 if (!err) { 463 v4l2_info(&dev->v4l2_dev, 464 "timeout: restart streaming\n"); 465 mutex_lock(&dev->io_mutex); 466 hdpvr_stop_streaming(dev); 467 mutex_unlock(&dev->io_mutex); 468 /* 469 * The FW needs about 4 seconds after streaming 470 * stopped before it is ready to restart 471 * streaming. 472 */ 473 msleep(4000); 474 err = hdpvr_start_streaming(dev); 475 if (err) { 476 ret = err; 477 goto err; 478 } 479 } 480 } 481 482 if (buf->status != BUFSTAT_READY) 483 break; 484 485 /* set remaining bytes to copy */ 486 urb = buf->urb; 487 rem = urb->actual_length - buf->pos; 488 cnt = rem > count ? count : rem; 489 490 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos, 491 cnt)) { 492 v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n"); 493 if (!ret) 494 ret = -EFAULT; 495 goto err; 496 } 497 498 buf->pos += cnt; 499 count -= cnt; 500 buffer += cnt; 501 ret += cnt; 502 503 /* finished, take next buffer */ 504 if (buf->pos == urb->actual_length) { 505 mutex_lock(&dev->io_mutex); 506 buf->pos = 0; 507 buf->status = BUFSTAT_AVAILABLE; 508 509 list_move_tail(&buf->buff_list, &dev->free_buff_list); 510 511 print_buffer_status(); 512 513 mutex_unlock(&dev->io_mutex); 514 515 wake_up_interruptible(&dev->wait_buffer); 516 517 buf = hdpvr_get_next_buffer(dev); 518 } 519 } 520err: 521 if (!ret && !buf) 522 ret = -EAGAIN; 523 return ret; 524} 525 526static __poll_t hdpvr_poll(struct file *filp, poll_table *wait) 527{ 528 __poll_t req_events = poll_requested_events(wait); 529 struct hdpvr_buffer *buf = NULL; 530 struct hdpvr_device *dev = video_drvdata(filp); 531 __poll_t mask = v4l2_ctrl_poll(filp, wait); 532 533 if (!(req_events & (EPOLLIN | EPOLLRDNORM))) 534 return mask; 535 536 mutex_lock(&dev->io_mutex); 537 538 if (dev->status == STATUS_IDLE) { 539 if (hdpvr_start_streaming(dev)) { 540 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 541 "start_streaming failed\n"); 542 dev->status = STATUS_IDLE; 543 } else { 544 dev->owner = filp->private_data; 545 } 546 547 print_buffer_status(); 548 } 549 mutex_unlock(&dev->io_mutex); 550 551 buf = hdpvr_get_next_buffer(dev); 552 /* only wait if no data is available */ 553 if (!buf || buf->status != BUFSTAT_READY) { 554 poll_wait(filp, &dev->wait_data, wait); 555 buf = hdpvr_get_next_buffer(dev); 556 } 557 if (buf && buf->status == BUFSTAT_READY) 558 mask |= EPOLLIN | EPOLLRDNORM; 559 560 return mask; 561} 562 563 564static const struct v4l2_file_operations hdpvr_fops = { 565 .owner = THIS_MODULE, 566 .open = hdpvr_open, 567 .release = hdpvr_release, 568 .read = hdpvr_read, 569 .poll = hdpvr_poll, 570 .unlocked_ioctl = video_ioctl2, 571}; 572 573/*=======================================================================*/ 574/* 575 * V4L2 ioctl handling 576 */ 577 578static int vidioc_querycap(struct file *file, void *priv, 579 struct v4l2_capability *cap) 580{ 581 struct hdpvr_device *dev = video_drvdata(file); 582 583 strscpy(cap->driver, "hdpvr", sizeof(cap->driver)); 584 strscpy(cap->card, "Hauppauge HD PVR", sizeof(cap->card)); 585 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); 586 return 0; 587} 588 589static int vidioc_s_std(struct file *file, void *_fh, 590 v4l2_std_id std) 591{ 592 struct hdpvr_device *dev = video_drvdata(file); 593 struct hdpvr_fh *fh = _fh; 594 u8 std_type = 1; 595 596 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) 597 return -ENODATA; 598 if (dev->status != STATUS_IDLE) 599 return -EBUSY; 600 if (std & V4L2_STD_525_60) 601 std_type = 0; 602 dev->cur_std = std; 603 dev->width = 720; 604 dev->height = std_type ? 576 : 480; 605 606 return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type); 607} 608 609static int vidioc_g_std(struct file *file, void *_fh, 610 v4l2_std_id *std) 611{ 612 struct hdpvr_device *dev = video_drvdata(file); 613 struct hdpvr_fh *fh = _fh; 614 615 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) 616 return -ENODATA; 617 *std = dev->cur_std; 618 return 0; 619} 620 621static int vidioc_querystd(struct file *file, void *_fh, v4l2_std_id *a) 622{ 623 struct hdpvr_device *dev = video_drvdata(file); 624 struct hdpvr_video_info vid_info; 625 struct hdpvr_fh *fh = _fh; 626 int ret; 627 628 *a = V4L2_STD_UNKNOWN; 629 if (dev->options.video_input == HDPVR_COMPONENT) 630 return fh->legacy_mode ? 0 : -ENODATA; 631 ret = get_video_info(dev, &vid_info); 632 if (vid_info.valid && vid_info.width == 720 && 633 (vid_info.height == 480 || vid_info.height == 576)) { 634 *a = (vid_info.height == 480) ? 635 V4L2_STD_525_60 : V4L2_STD_625_50; 636 } 637 return ret; 638} 639 640static int vidioc_s_dv_timings(struct file *file, void *_fh, 641 struct v4l2_dv_timings *timings) 642{ 643 struct hdpvr_device *dev = video_drvdata(file); 644 struct hdpvr_fh *fh = _fh; 645 int i; 646 647 fh->legacy_mode = false; 648 if (dev->options.video_input) 649 return -ENODATA; 650 if (dev->status != STATUS_IDLE) 651 return -EBUSY; 652 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) 653 if (v4l2_match_dv_timings(timings, hdpvr_dv_timings + i, 0, false)) 654 break; 655 if (i == ARRAY_SIZE(hdpvr_dv_timings)) 656 return -EINVAL; 657 dev->cur_dv_timings = hdpvr_dv_timings[i]; 658 dev->width = hdpvr_dv_timings[i].bt.width; 659 dev->height = hdpvr_dv_timings[i].bt.height; 660 return 0; 661} 662 663static int vidioc_g_dv_timings(struct file *file, void *_fh, 664 struct v4l2_dv_timings *timings) 665{ 666 struct hdpvr_device *dev = video_drvdata(file); 667 struct hdpvr_fh *fh = _fh; 668 669 fh->legacy_mode = false; 670 if (dev->options.video_input) 671 return -ENODATA; 672 *timings = dev->cur_dv_timings; 673 return 0; 674} 675 676static int vidioc_query_dv_timings(struct file *file, void *_fh, 677 struct v4l2_dv_timings *timings) 678{ 679 struct hdpvr_device *dev = video_drvdata(file); 680 struct hdpvr_fh *fh = _fh; 681 struct hdpvr_video_info vid_info; 682 bool interlaced; 683 int ret = 0; 684 int i; 685 686 fh->legacy_mode = false; 687 if (dev->options.video_input) 688 return -ENODATA; 689 ret = get_video_info(dev, &vid_info); 690 if (ret) 691 return ret; 692 if (!vid_info.valid) 693 return -ENOLCK; 694 interlaced = vid_info.fps <= 30; 695 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) { 696 const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt; 697 unsigned hsize; 698 unsigned vsize; 699 unsigned fps; 700 701 hsize = V4L2_DV_BT_FRAME_WIDTH(bt); 702 vsize = V4L2_DV_BT_FRAME_HEIGHT(bt); 703 fps = (unsigned)bt->pixelclock / (hsize * vsize); 704 if (bt->width != vid_info.width || 705 bt->height != vid_info.height || 706 bt->interlaced != interlaced || 707 (fps != vid_info.fps && fps + 1 != vid_info.fps)) 708 continue; 709 *timings = hdpvr_dv_timings[i]; 710 break; 711 } 712 if (i == ARRAY_SIZE(hdpvr_dv_timings)) 713 ret = -ERANGE; 714 715 return ret; 716} 717 718static int vidioc_enum_dv_timings(struct file *file, void *_fh, 719 struct v4l2_enum_dv_timings *timings) 720{ 721 struct hdpvr_device *dev = video_drvdata(file); 722 struct hdpvr_fh *fh = _fh; 723 724 fh->legacy_mode = false; 725 memset(timings->reserved, 0, sizeof(timings->reserved)); 726 if (dev->options.video_input) 727 return -ENODATA; 728 if (timings->index >= ARRAY_SIZE(hdpvr_dv_timings)) 729 return -EINVAL; 730 timings->timings = hdpvr_dv_timings[timings->index]; 731 return 0; 732} 733 734static int vidioc_dv_timings_cap(struct file *file, void *_fh, 735 struct v4l2_dv_timings_cap *cap) 736{ 737 struct hdpvr_device *dev = video_drvdata(file); 738 struct hdpvr_fh *fh = _fh; 739 740 fh->legacy_mode = false; 741 if (dev->options.video_input) 742 return -ENODATA; 743 cap->type = V4L2_DV_BT_656_1120; 744 cap->bt.min_width = 720; 745 cap->bt.max_width = 1920; 746 cap->bt.min_height = 480; 747 cap->bt.max_height = 1080; 748 cap->bt.min_pixelclock = 27000000; 749 cap->bt.max_pixelclock = 74250000; 750 cap->bt.standards = V4L2_DV_BT_STD_CEA861; 751 cap->bt.capabilities = V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE; 752 return 0; 753} 754 755static const char *iname[] = { 756 [HDPVR_COMPONENT] = "Component", 757 [HDPVR_SVIDEO] = "S-Video", 758 [HDPVR_COMPOSITE] = "Composite", 759}; 760 761static int vidioc_enum_input(struct file *file, void *_fh, struct v4l2_input *i) 762{ 763 unsigned int n; 764 765 n = i->index; 766 if (n >= HDPVR_VIDEO_INPUTS) 767 return -EINVAL; 768 769 i->type = V4L2_INPUT_TYPE_CAMERA; 770 771 strscpy(i->name, iname[n], sizeof(i->name)); 772 773 i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF; 774 775 i->capabilities = n ? V4L2_IN_CAP_STD : V4L2_IN_CAP_DV_TIMINGS; 776 i->std = n ? V4L2_STD_ALL : 0; 777 778 return 0; 779} 780 781static int vidioc_s_input(struct file *file, void *_fh, 782 unsigned int index) 783{ 784 struct hdpvr_device *dev = video_drvdata(file); 785 int retval; 786 787 if (index >= HDPVR_VIDEO_INPUTS) 788 return -EINVAL; 789 790 if (dev->status != STATUS_IDLE) 791 return -EBUSY; 792 793 retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1); 794 if (!retval) { 795 dev->options.video_input = index; 796 /* 797 * Unfortunately gstreamer calls ENUMSTD and bails out if it 798 * won't find any formats, even though component input is 799 * selected. This means that we have to leave tvnorms at 800 * V4L2_STD_ALL. We cannot use the 'legacy' trick since 801 * tvnorms is set at the device node level and not at the 802 * filehandle level. 803 * 804 * Comment this out for now, but if the legacy mode can be 805 * removed in the future, then this code should be enabled 806 * again. 807 dev->video_dev.tvnorms = 808 (index != HDPVR_COMPONENT) ? V4L2_STD_ALL : 0; 809 */ 810 } 811 812 return retval; 813} 814 815static int vidioc_g_input(struct file *file, void *private_data, 816 unsigned int *index) 817{ 818 struct hdpvr_device *dev = video_drvdata(file); 819 820 *index = dev->options.video_input; 821 return 0; 822} 823 824 825static const char *audio_iname[] = { 826 [HDPVR_RCA_FRONT] = "RCA front", 827 [HDPVR_RCA_BACK] = "RCA back", 828 [HDPVR_SPDIF] = "SPDIF", 829}; 830 831static int vidioc_enumaudio(struct file *file, void *priv, 832 struct v4l2_audio *audio) 833{ 834 unsigned int n; 835 836 n = audio->index; 837 if (n >= HDPVR_AUDIO_INPUTS) 838 return -EINVAL; 839 840 audio->capability = V4L2_AUDCAP_STEREO; 841 842 strscpy(audio->name, audio_iname[n], sizeof(audio->name)); 843 844 return 0; 845} 846 847static int vidioc_s_audio(struct file *file, void *private_data, 848 const struct v4l2_audio *audio) 849{ 850 struct hdpvr_device *dev = video_drvdata(file); 851 int retval; 852 853 if (audio->index >= HDPVR_AUDIO_INPUTS) 854 return -EINVAL; 855 856 if (dev->status != STATUS_IDLE) 857 return -EBUSY; 858 859 retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec); 860 if (!retval) 861 dev->options.audio_input = audio->index; 862 863 return retval; 864} 865 866static int vidioc_g_audio(struct file *file, void *private_data, 867 struct v4l2_audio *audio) 868{ 869 struct hdpvr_device *dev = video_drvdata(file); 870 871 audio->index = dev->options.audio_input; 872 audio->capability = V4L2_AUDCAP_STEREO; 873 strscpy(audio->name, audio_iname[audio->index], sizeof(audio->name)); 874 return 0; 875} 876 877static int hdpvr_try_ctrl(struct v4l2_ctrl *ctrl) 878{ 879 struct hdpvr_device *dev = 880 container_of(ctrl->handler, struct hdpvr_device, hdl); 881 882 switch (ctrl->id) { 883 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: 884 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR && 885 dev->video_bitrate->val >= dev->video_bitrate_peak->val) 886 dev->video_bitrate_peak->val = 887 dev->video_bitrate->val + 100000; 888 break; 889 } 890 return 0; 891} 892 893static int hdpvr_s_ctrl(struct v4l2_ctrl *ctrl) 894{ 895 struct hdpvr_device *dev = 896 container_of(ctrl->handler, struct hdpvr_device, hdl); 897 struct hdpvr_options *opt = &dev->options; 898 int ret = -EINVAL; 899 900 switch (ctrl->id) { 901 case V4L2_CID_BRIGHTNESS: 902 ret = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->val); 903 if (ret) 904 break; 905 dev->options.brightness = ctrl->val; 906 return 0; 907 case V4L2_CID_CONTRAST: 908 ret = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->val); 909 if (ret) 910 break; 911 dev->options.contrast = ctrl->val; 912 return 0; 913 case V4L2_CID_SATURATION: 914 ret = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->val); 915 if (ret) 916 break; 917 dev->options.saturation = ctrl->val; 918 return 0; 919 case V4L2_CID_HUE: 920 ret = hdpvr_config_call(dev, CTRL_HUE, ctrl->val); 921 if (ret) 922 break; 923 dev->options.hue = ctrl->val; 924 return 0; 925 case V4L2_CID_SHARPNESS: 926 ret = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->val); 927 if (ret) 928 break; 929 dev->options.sharpness = ctrl->val; 930 return 0; 931 case V4L2_CID_MPEG_AUDIO_ENCODING: 932 if (dev->flags & HDPVR_FLAG_AC3_CAP) { 933 opt->audio_codec = ctrl->val; 934 return hdpvr_set_audio(dev, opt->audio_input + 1, 935 opt->audio_codec); 936 } 937 return 0; 938 case V4L2_CID_MPEG_VIDEO_ENCODING: 939 return 0; 940/* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */ 941/* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */ 942/* opt->gop_mode |= 0x2; */ 943/* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ 944/* opt->gop_mode); */ 945/* } */ 946/* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */ 947/* opt->gop_mode &= ~0x2; */ 948/* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ 949/* opt->gop_mode); */ 950/* } */ 951/* break; */ 952 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: { 953 uint peak_bitrate = dev->video_bitrate_peak->val / 100000; 954 uint bitrate = dev->video_bitrate->val / 100000; 955 956 if (ctrl->is_new) { 957 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR) 958 opt->bitrate_mode = HDPVR_CONSTANT; 959 else 960 opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE; 961 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE, 962 opt->bitrate_mode); 963 v4l2_ctrl_activate(dev->video_bitrate_peak, 964 ctrl->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); 965 } 966 967 if (dev->video_bitrate_peak->is_new || 968 dev->video_bitrate->is_new) { 969 opt->bitrate = bitrate; 970 opt->peak_bitrate = peak_bitrate; 971 hdpvr_set_bitrate(dev); 972 } 973 return 0; 974 } 975 case V4L2_CID_MPEG_STREAM_TYPE: 976 return 0; 977 default: 978 break; 979 } 980 return ret; 981} 982 983static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data, 984 struct v4l2_fmtdesc *f) 985{ 986 if (f->index != 0) 987 return -EINVAL; 988 989 f->pixelformat = V4L2_PIX_FMT_MPEG; 990 991 return 0; 992} 993 994static int vidioc_g_fmt_vid_cap(struct file *file, void *_fh, 995 struct v4l2_format *f) 996{ 997 struct hdpvr_device *dev = video_drvdata(file); 998 struct hdpvr_fh *fh = _fh; 999 int ret; 1000 1001 /* 1002 * The original driver would always returns the current detected 1003 * resolution as the format (and EFAULT if it couldn't be detected). 1004 * With the introduction of VIDIOC_QUERY_DV_TIMINGS there is now a 1005 * better way of doing this, but to stay compatible with existing 1006 * applications we assume legacy mode every time an application opens 1007 * the device. Only if one of the new DV_TIMINGS ioctls is called 1008 * will the filehandle go into 'normal' mode where g_fmt returns the 1009 * last set format. 1010 */ 1011 if (fh->legacy_mode) { 1012 struct hdpvr_video_info vid_info; 1013 1014 ret = get_video_info(dev, &vid_info); 1015 if (ret < 0) 1016 return ret; 1017 if (!vid_info.valid) 1018 return -EFAULT; 1019 f->fmt.pix.width = vid_info.width; 1020 f->fmt.pix.height = vid_info.height; 1021 } else { 1022 f->fmt.pix.width = dev->width; 1023 f->fmt.pix.height = dev->height; 1024 } 1025 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; 1026 f->fmt.pix.sizeimage = dev->bulk_in_size; 1027 f->fmt.pix.bytesperline = 0; 1028 if (f->fmt.pix.width == 720) { 1029 /* SDTV formats */ 1030 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 1031 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 1032 } else { 1033 /* HDTV formats */ 1034 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709; 1035 f->fmt.pix.field = V4L2_FIELD_NONE; 1036 } 1037 return 0; 1038} 1039 1040static int vidioc_encoder_cmd(struct file *filp, void *priv, 1041 struct v4l2_encoder_cmd *a) 1042{ 1043 struct hdpvr_device *dev = video_drvdata(filp); 1044 int res = 0; 1045 1046 mutex_lock(&dev->io_mutex); 1047 a->flags = 0; 1048 1049 switch (a->cmd) { 1050 case V4L2_ENC_CMD_START: 1051 if (dev->owner && filp->private_data != dev->owner) { 1052 res = -EBUSY; 1053 break; 1054 } 1055 if (dev->status == STATUS_STREAMING) 1056 break; 1057 res = hdpvr_start_streaming(dev); 1058 if (!res) 1059 dev->owner = filp->private_data; 1060 else 1061 dev->status = STATUS_IDLE; 1062 break; 1063 case V4L2_ENC_CMD_STOP: 1064 if (dev->owner && filp->private_data != dev->owner) { 1065 res = -EBUSY; 1066 break; 1067 } 1068 if (dev->status == STATUS_IDLE) 1069 break; 1070 res = hdpvr_stop_streaming(dev); 1071 if (!res) 1072 dev->owner = NULL; 1073 break; 1074 default: 1075 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 1076 "Unsupported encoder cmd %d\n", a->cmd); 1077 res = -EINVAL; 1078 break; 1079 } 1080 1081 mutex_unlock(&dev->io_mutex); 1082 return res; 1083} 1084 1085static int vidioc_try_encoder_cmd(struct file *filp, void *priv, 1086 struct v4l2_encoder_cmd *a) 1087{ 1088 a->flags = 0; 1089 switch (a->cmd) { 1090 case V4L2_ENC_CMD_START: 1091 case V4L2_ENC_CMD_STOP: 1092 return 0; 1093 default: 1094 return -EINVAL; 1095 } 1096} 1097 1098static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = { 1099 .vidioc_querycap = vidioc_querycap, 1100 .vidioc_s_std = vidioc_s_std, 1101 .vidioc_g_std = vidioc_g_std, 1102 .vidioc_querystd = vidioc_querystd, 1103 .vidioc_s_dv_timings = vidioc_s_dv_timings, 1104 .vidioc_g_dv_timings = vidioc_g_dv_timings, 1105 .vidioc_query_dv_timings= vidioc_query_dv_timings, 1106 .vidioc_enum_dv_timings = vidioc_enum_dv_timings, 1107 .vidioc_dv_timings_cap = vidioc_dv_timings_cap, 1108 .vidioc_enum_input = vidioc_enum_input, 1109 .vidioc_g_input = vidioc_g_input, 1110 .vidioc_s_input = vidioc_s_input, 1111 .vidioc_enumaudio = vidioc_enumaudio, 1112 .vidioc_g_audio = vidioc_g_audio, 1113 .vidioc_s_audio = vidioc_s_audio, 1114 .vidioc_enum_fmt_vid_cap= vidioc_enum_fmt_vid_cap, 1115 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1116 .vidioc_s_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1117 .vidioc_try_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1118 .vidioc_encoder_cmd = vidioc_encoder_cmd, 1119 .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd, 1120 .vidioc_log_status = v4l2_ctrl_log_status, 1121 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1122 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1123}; 1124 1125static void hdpvr_device_release(struct video_device *vdev) 1126{ 1127 struct hdpvr_device *dev = video_get_drvdata(vdev); 1128 1129 hdpvr_delete(dev); 1130 flush_work(&dev->worker); 1131 1132 v4l2_device_unregister(&dev->v4l2_dev); 1133 v4l2_ctrl_handler_free(&dev->hdl); 1134 1135 /* deregister I2C adapter */ 1136#if IS_ENABLED(CONFIG_I2C) 1137 mutex_lock(&dev->i2c_mutex); 1138 i2c_del_adapter(&dev->i2c_adapter); 1139 mutex_unlock(&dev->i2c_mutex); 1140#endif /* CONFIG_I2C */ 1141 1142 kfree(dev->usbc_buf); 1143 kfree(dev); 1144} 1145 1146static const struct video_device hdpvr_video_template = { 1147 .fops = &hdpvr_fops, 1148 .release = hdpvr_device_release, 1149 .ioctl_ops = &hdpvr_ioctl_ops, 1150 .tvnorms = V4L2_STD_ALL, 1151 .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO | 1152 V4L2_CAP_READWRITE, 1153}; 1154 1155static const struct v4l2_ctrl_ops hdpvr_ctrl_ops = { 1156 .try_ctrl = hdpvr_try_ctrl, 1157 .s_ctrl = hdpvr_s_ctrl, 1158}; 1159 1160int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent, 1161 int devnum) 1162{ 1163 struct v4l2_ctrl_handler *hdl = &dev->hdl; 1164 bool ac3 = dev->flags & HDPVR_FLAG_AC3_CAP; 1165 int res; 1166 1167 // initialize dev->worker 1168 INIT_WORK(&dev->worker, hdpvr_transmit_buffers); 1169 1170 dev->cur_std = V4L2_STD_525_60; 1171 dev->width = 720; 1172 dev->height = 480; 1173 dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX]; 1174 v4l2_ctrl_handler_init(hdl, 11); 1175 if (dev->fw_ver > 0x15) { 1176 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1177 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x80); 1178 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1179 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x40); 1180 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1181 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x40); 1182 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1183 V4L2_CID_HUE, 0x0, 0x1e, 1, 0xf); 1184 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1185 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); 1186 } else { 1187 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1188 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x86); 1189 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1190 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x80); 1191 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1192 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x80); 1193 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1194 V4L2_CID_HUE, 0x0, 0xff, 1, 0x80); 1195 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1196 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); 1197 } 1198 1199 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1200 V4L2_CID_MPEG_STREAM_TYPE, 1201 V4L2_MPEG_STREAM_TYPE_MPEG2_TS, 1202 0x1, V4L2_MPEG_STREAM_TYPE_MPEG2_TS); 1203 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1204 V4L2_CID_MPEG_AUDIO_ENCODING, 1205 ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : V4L2_MPEG_AUDIO_ENCODING_AAC, 1206 0x7, ac3 ? dev->options.audio_codec : V4L2_MPEG_AUDIO_ENCODING_AAC); 1207 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1208 V4L2_CID_MPEG_VIDEO_ENCODING, 1209 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 0x3, 1210 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC); 1211 1212 dev->video_mode = v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1213 V4L2_CID_MPEG_VIDEO_BITRATE_MODE, 1214 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0, 1215 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); 1216 1217 dev->video_bitrate = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1218 V4L2_CID_MPEG_VIDEO_BITRATE, 1219 1000000, 13500000, 100000, 6500000); 1220 dev->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1221 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK, 1222 1100000, 20200000, 100000, 9000000); 1223 dev->v4l2_dev.ctrl_handler = hdl; 1224 if (hdl->error) { 1225 res = hdl->error; 1226 v4l2_err(&dev->v4l2_dev, "Could not register controls\n"); 1227 goto error; 1228 } 1229 v4l2_ctrl_cluster(3, &dev->video_mode); 1230 res = v4l2_ctrl_handler_setup(hdl); 1231 if (res < 0) { 1232 v4l2_err(&dev->v4l2_dev, "Could not setup controls\n"); 1233 goto error; 1234 } 1235 1236 /* setup and register video device */ 1237 dev->video_dev = hdpvr_video_template; 1238 strscpy(dev->video_dev.name, "Hauppauge HD PVR", 1239 sizeof(dev->video_dev.name)); 1240 dev->video_dev.v4l2_dev = &dev->v4l2_dev; 1241 video_set_drvdata(&dev->video_dev, dev); 1242 1243 res = video_register_device(&dev->video_dev, VFL_TYPE_VIDEO, devnum); 1244 if (res < 0) { 1245 v4l2_err(&dev->v4l2_dev, "video_device registration failed\n"); 1246 goto error; 1247 } 1248 1249 return 0; 1250error: 1251 v4l2_ctrl_handler_free(hdl); 1252 return res; 1253} 1254